🇺🇸 Illinois Termination Laws — 2026 UPDATE

Illinois Termination Laws 2026: Wrongful Termination, Final Pay & WARN Act

⚠️Informational only — not legal or tax advice.

Last Updated: March, 2026
Last Reviewed: March, 2026
Applicable Period: 2026
Jurisdiction: State of Illinois, United States      
Update Schedule: Quarterly reviews in 2026; annual reviews thereafter

Illinois Termination Laws 2026

Table of Contents

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Introduction

Illinois is an at-will employment state. Illinois law provides comprehensive state-specific protections governing wrongful termination, final paycheck deadlines, and employer obligations during mass layoffs. The state operates under the Illinois Worker Adjustment and Retraining Notification Act (820 ILCS 65/) for mass layoff notifications. Discrimination claims are administered by the Illinois Department of Human Rights (IDHR) under the Illinois Human Rights Act (775 ILCS 5/), one of the broadest state anti-discrimination statutes in the country. At the federal level, protections under Title VII, the ADA, the ADEA, the WARN Act, and the Family and Medical Leave Act (FMLA) apply to Illinois employees. This page compiles current termination law requirements from the Illinois Department of Labor, the Illinois Department of Human Rights, and the U.S. Department of Labor.

Quick Reference — Illinois Termination Law Snapshot

Category Illinois
Employment Doctrine At-Will
At-Will Exceptions Recognized Public Policy; Implied Contract
Final Paycheck — Involuntary Termination At time of separation if possible; no later than next regularly scheduled payday (820 ILCS 115/5)
Final Paycheck — Voluntary Resignation At time of separation if possible; no later than next regularly scheduled payday (820 ILCS 115/5)
PTO Payout Required at Termination Yes, if employer maintains a vacation bank or general PTO bank (820 ILCS 115/2; IDOL Vacation FAQ)
State WARN Act (Mini-WARN) Yes — Illinois Worker Adjustment and Retraining Notification Act (820 ILCS 65/)
State WARN Threshold 75 or more full-time employees
State WARN Notice Period 60 days
Severance Pay Required by State Law No
State Whistleblower Statute Illinois Whistleblower Act (740 ILCS 174/); IL OSHA anti-retaliation (820 ILCS 219/110)
Service Letter Law No
Filing Agency for Termination Claims Illinois Department of Labor (wage claims); Illinois Department of Human Rights (discrimination); EEOC Chicago District Office
Information Current As Of March 2026

Sources: https://labor.illinois.gov · https://dhr.illinois.gov · https://www.dol.gov/general/topic/termination · https://www.eeoc.gov/field-office/chicago

At-Will Employment in Illinois

Is Illinois an At-Will Employment State?

Illinois follows the at-will employment doctrine. According to the Illinois Department of Labor, an employer or employee may terminate the employment relationship at any time, without any reason or cause. Neither party is required to give advance notice unless a contract requires otherwise.

Source: https://labor.illinois.gov/faqs.html

Exceptions to At-Will Employment in Illinois

Illinois courts recognize two primary common-law exceptions to at-will employment. Illinois does not recognize the implied covenant of good faith and fair dealing as an independent limitation on the right to terminate an at-will employee.

Public Policy Exception — Illinois recognizes the public policy exception to at-will employment. Termination is unlawful if it violates a clearly mandated public policy of the state. The Illinois Supreme Court has recognized that termination is actionable under this doctrine when an employee is discharged for: refusing to commit an illegal act requested by the employer; filing a workers’ compensation claim; performing jury duty; or exercising a statutory right. Public policy is derived from the Illinois Constitution, state statutes, and judicial decisions.

Implied Contract Exception — Illinois recognizes the implied contract exception. An implied contract may arise from language contained in an employee handbook, oral representations made during hiring, or consistent employer practices that create a reasonable expectation that employment will continue except for cause. The Illinois Supreme Court established in Duldulao v. Saint Mary of Nazareth Hospital Center, 115 Ill. 2d 482 (1987), that specific language in an employee handbook can overcome the at-will presumption. The presumption of at-will employment may be rebutted by the language in the handbook.

Good Faith and Fair Dealing Exception — Illinois does not recognize an independent cause of action for breach of an implied covenant of good faith and fair dealing in the context of at-will employment. While such a duty exists as a matter of law in every contract, it does not operate to limit termination of an at-will employment relationship under Illinois case law. Powers v. Delnor Hospital, 135 Ill. App. 3d 317 (1985).

At-Will Exception
At-Will Exception Recognized in Illinois? Legal Basis
Public Policy Yes Illinois Supreme Court case law; Illinois Human Rights Act (775 ILCS 5/)
Implied Contract Yes Duldulao v. Saint Mary of Nazareth Hospital Center, 115 Ill. 2d 482 (1987)
Good Faith & Fair Dealing No Powers v. Delnor Hospital, 135 Ill. App. 3d 317 (1985)
Sources: https://labor.illinois.gov/faqs.html ; https://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2266&ChapterID=64

Wrongful Termination in Illinois

What Constitutes Wrongful Termination in Illinois?

Wrongful termination in Illinois occurs when an employer terminates an employee in violation of federal or state law, public policy, or an employment contract. Illinois provides protection through both federal statutes and the Illinois Human Rights Act (775 ILCS 5/), which is administered by the Illinois Department of Human Rights (IDHR).

Federal Protected Classes (apply in Illinois):

Federal law prohibits termination based on the following protected characteristics, subject to employer size thresholds:

  • Race, color, national origin, sex, religion — Title VII of the Civil Rights Act of 1964 (employers with 15 or more employees)
  • Age 40 and over — Age Discrimination in Employment Act (ADEA) (employers with 20 or more employees)
  • Disability — Americans with Disabilities Act (ADA) (employers with 15 or more employees)
  • Pregnancy — Pregnancy Discrimination Act
  • Genetic information — Genetic Information Nondiscrimination Act (GINA)

Source: https://www.eeoc.gov/discrimination-type

State Protected Classes — Illinois Human Rights Act (775 ILCS 5/):

The Illinois Human Rights Act (IHRA) prohibits termination based on a broad set of protected classes in addition to those covered under federal law. The IDHR administers and enforces the IHRA. Protected classes under the IHRA in the employment context include:

  • Race, color, religion, sex (including sexual harassment), national origin, ancestry
  • Age (40 and over)
  • Sexual orientation (including gender-related identity)
  • Physical or mental disability
  • Pregnancy
  • Marital status
  • Order of protection status
  • Arrest record
  • Conviction record
  • Citizenship and immigration status
  • Military status or unfavorable discharge from military service
  • Family responsibilities (effective January 1, 2023 — employers with one or more employees)

Source: https://dhr.illinois.gov/filing-a-charge/faq-home/faq-section-ii.html · https://dhr.illinois.gov/filing-a-charge/employment.html

Employer Size Thresholds:

  • Federal anti-discrimination laws (Title VII, ADA): 15 or more employees
  • Federal ADEA: 20 or more employees
  • Illinois Human Rights Act: 15 or more employees for most employment discrimination claims; 1 or more employees for sexual harassment, disability, and pregnancy claims

Source: https://www.ilga.gov/documents/legislation/100/HB/10000HB4572gms.htm · https://dhr.illinois.gov/filing-a-charge/faq-home/faq-section-ii.html

Statute of Limitations for Wrongful Termination Claims in Illinois
Claim Type Time Limit Filing Agency
Federal discrimination (Title VII, ADA, ADEA) 300 days (Illinois is a deferral state) EEOC
State discrimination — Illinois Human Rights Act (775 ILCS 5/) 2 years from the date of the alleged discrimination Illinois Department of Human Rights (IDHR)
Breach of implied contract Varies — consult state court rules Circuit Court
Public policy violation (retaliatory discharge) 5 years (Illinois general statute of limitations for civil actions) Circuit Court
Wage claim (final paycheck) 1 year from the date wages were due (820 ILCS 115/11) Illinois Department of Labor
Sources: https://dhr.illinois.gov/ ; https://www.eeoc.gov/filing-charge-discrimination ; https://labor.illinois.gov/faqs/wage-payment-faq.html

Final Paycheck Laws in Illinois

Types of Employment Separation in Illinois

The type of separation affects final pay timing, PTO payout obligations, and unemployment eligibility under Illinois law.

Separation Type
Separation Type Definition Final Pay Impact Unemployment Eligibility
Fired / Discharged Employer ends employment for cause or without cause Paid at separation if possible; no later than next regularly scheduled payday Generally eligible unless terminated for misconduct
Laid Off / Reduction in Force Employer ends employment for business reasons Same deadline as fired/discharged Generally eligible
Voluntary Resignation (with notice) Employee quits with advance notice Paid at separation if possible; no later than next regularly scheduled payday Generally not eligible (exceptions for good cause)
Voluntary Resignation (no notice) Employee quits without notice Same deadline — next regularly scheduled payday Generally not eligible
Constructive Discharge Employee resigns due to intolerable conditions created by employer Treated as involuntary termination for legal purposes May be eligible depending on circumstances
Mutual Agreement / Contract End Both parties agree to end the relationship Next regularly scheduled payday Depends on circumstances
Source: https://labor.illinois.gov/faqs/wage-payment-faq.html ; https://ides.illinois.gov

When Is the Final Paycheck Due in Illinois?

Under the Illinois Wage Payment and Collection Act (820 ILCS 115/5), employers are required to pay the final compensation of separated employees in full at the time of separation, if possible, but in no event later than the next regularly scheduled payday. This rule applies regardless of whether the separation is voluntary or involuntary.

Termination Type
Termination Type Final Paycheck Deadline Citation
Involuntary termination (fired/laid off) At time of separation if possible; no later than next regular payday 820 ILCS 115/5
Voluntary resignation (with notice) At time of separation if possible; no later than next regular payday 820 ILCS 115/5
Voluntary resignation (no notice) At time of separation if possible; no later than next regular payday 820 ILCS 115/5
Mutual agreement / End of contract At time of separation if possible; no later than next regular payday 820 ILCS 115/5
Source: https://labor.illinois.gov/faqs/wage-payment-faq.html

What Must Be Included in the Final Paycheck?

Under 820 ILCS 115/2 and IDOL guidance, final compensation includes:

  • All earned wages through the last day of work
  • Earned commissions and earned bonuses (those that have vested at the time of separation)
  • The monetary equivalent of earned, accrued vacation time (if the employer maintains a vacation bank or general PTO bank)
  • Accrued overtime

Commissions due at the time of termination must be paid at the applicable final paycheck deadline. Commissions that become due after separation must be paid within 13 days of the date they become due under IDOL guidance.

Sick pay and holiday pay are not required to be included in the final paycheck unless the employer’s policy explicitly provides for such payment. 820 ILCS 115/2.

Prohibited deductions from final pay include deductions for unreturned employer equipment, uniforms, or property, or deductions based on the employee’s failure to provide notice. These deductions are explicitly prohibited under IDOL Deductions from Pay guidance.

Sources: https://labor.illinois.gov/faqs/wage-payment-faq.html · https://labor.illinois.gov/faqs/deductions-from-pay-faq.html

PTO and Vacation Payout at Termination in Illinois

Illinois requires employers to pay out accrued, unused vacation or general PTO at termination where the employer maintains a vacation bank or general PTO bank. Under the Illinois Wage Payment and Collection Act (820 ILCS 115/2) and IDOL Vacation FAQ guidance, the monetary equivalent of all earned, accrued vacation must be included in the final paycheck if the employer has a vacation or general PTO policy. Employers cannot require forfeiture of earned vacation through a “use-it-or-lose-it” provision that operates at the time of termination — if vacation time has been earned, it must be paid out.

However, Illinois law does not require employers to offer vacation or PTO in the first place. The payout obligation arises only where the employer has established such a policy.

Unused paid leave accrued under the Illinois Paid Leave for All Workers Act (820 ILCS 192/) is not required to be paid out at termination unless that leave is credited to the employee’s general PTO bank or vacation account. If an employer maintains separate recordkeeping for PLAWA leave and vacation/PTO, only the vacation/PTO balance is subject to payout.

Sources: https://labor.illinois.gov/faqs/vacation-faq.html · https://labor.illinois.gov/faqs/paidleavefaq.html · https://labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/plaw/Paid%20Leave%20for%20All%20Workers%20Act%20-%20Employer.pdf

Penalties for Late Final Paycheck in Illinois

Where an employer fails to pay final compensation on time, the following penalties may apply under IDOL enforcement:

  • 2% monthly penalty — An employee who does not receive a timely final paycheck may be awarded a penalty of 2% of the unpaid final wages for each month the wages remain unpaid.
  • 1% daily penalty — Where the Illinois Department of Labor orders an employer to pay final wages and the employer fails to do so within 15 days, an additional penalty of 1% of the final wages accrues for each day of continued non-payment.
  • Administrative fees — If the claim proceeds to a hearing before an Administrative Law Judge and the employer is found liable, administrative fees apply: $500 for claims of $3,000 or less; $725 for claims between $3,000 and $10,000; $1,250 for claims over $10,000.
  • Statutory damages — In addition to the unpaid amount, an employer found liable at hearing is subject to statutory damages of 5% of the amount owed multiplied by the number of months between the initial underpayment and the ALJ order.

Wage claims are filed online through the Illinois Department of Labor. The statute of limitations for filing a wage claim with IDOL is one year from the date the wages were due. (820 ILCS 115/11.)

Sources: https://labor.illinois.gov/faqs/wage-payment-faq.html · https://labor.illinois.gov/faqs/employer-faq.html · https://webapps.illinois.gov/dol/wageclaims/

Severance Pay Laws in Illinois

Does Illinois Require Severance Pay?

Illinois does not require employers to provide severance pay upon termination. No state statute mandates severance. The Illinois Department of Labor has confirmed that severance pay is not due unless the employer has promised it in an employment contract or other agreement. 820 ILCS 115/2.

Where an employer has an established severance policy or an individual employment contract providing for severance, the terms of that policy or contract govern. Employers with inconsistent severance practices may create legal exposure.

Source: https://labor.illinois.gov/faqs/wage-payment-faq.html

Severance Agreements and Release of Claims

The federal Older Workers Benefit Protection Act (OWBPA), 29 U.S.C. § 626(f), governs severance agreements that include a waiver of age discrimination claims for employees age 40 and over. Requirements include:

  • 21-day consideration period for individual terminations (45 days for group layoffs or reductions in force)
  • 7-day revocation period after signing — the employee may revoke within 7 days and the agreement does not become effective until the revocation period expires
  • Written agreement must specifically reference ADEA rights and be written in plain language

The Illinois Workplace Transparency Act (820 ILCS 96/) places restrictions on non-disclosure and non-disparagement provisions in certain employment agreements and settlement agreements. Under the Act, provisions that prohibit an employee from disclosing information related to unlawful employment practices are unenforceable.

Sources: https://www.dol.gov/agencies/whd/faq/workers · https://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2617&ChapterID=68

WARN Act and Mass Layoff Laws in Illinois

Federal WARN Act Requirements

The federal Worker Adjustment and Retraining Notification (WARN) Act, 29 U.S.C. § 2101 et seq., requires employers with 100 or more full-time employees to provide at least 60 calendar days’ advance written notice before a plant closing or mass layoff.

Trigger Federal Threshold
Plant closing 50+ employees at a single site of employment
Mass layoff 500+ employees, OR 50–499 employees if they constitute ≥33% of the workforce
Employer coverage 100+ full-time employees (or 100+ employees working a combined 4,000+ hours/week)

Federal WARN exceptions include: faltering company (plant closings only), unforeseeable business circumstances, and natural disaster.

Source: https://www.dol.gov/agencies/eta/layoffs/warn

Illinois WARN Act (820 ILCS 65/)

Illinois has a state-level WARN Act — the Illinois Worker Adjustment and Retraining Notification Act — signed into law on August 15, 2004. The Act is administered by the Illinois Department of Labor and the Illinois Department of Commerce and Economic Opportunity (DCEO). The Illinois WARN Act in several respects provides broader coverage than the federal act.

Requirement Federal WARN Illinois WARN (820 ILCS 65/)
Employer threshold 100 full-time employees 75 full-time employees (excluding part-time employees working fewer than 20 hours/week or employed fewer than 6 of the past 12 months)
Mass layoff threshold 500 employees OR 50–499 if ≥33% of workforce At least 33% of employees AND at least 25 employees, OR at least 250 employees (regardless of percentage)
Plant closing threshold 50+ employees at a single site 50+ full-time employees at a single site
Notice period 60 calendar days 60 calendar days
Covered events Plant closing, mass layoff Plant closing, mass layoff (also includes fossil fuel power plant and coal mine closures — 2-year notice requirement)
Penalties — wages Back pay and benefits for each day of violation, up to 60 days Back pay and benefits for each day of violation, up to 60 days
Civil penalty Up to $500/day for failure to notify the unit of local government Up to $500/day for each day of the notice violation
Administering agency U.S. DOL Illinois Department of Labor (217-782-1710)
Government employers Exempt Exempt

Notice under the Illinois WARN Act must be provided to: affected employees, their representatives (if any), and the Illinois Department of Commerce and Economic Opportunity (DCEO).

A reduction in the notice period may be allowed if the employer can establish the elements set forth in Section 15 of the Act and provides a brief statement to the Illinois Department of Labor describing the basis for reducing the notification period.

Sources: https://labor.illinois.gov/laws-rules/conmed/warn.html · https://dceo.illinois.gov/workforcedevelopment/warn.html · https://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2617&ChapterID=68 · https://www.dol.gov/agencies/eta/layoffs/warn

Retaliation and Whistleblower Protections in Illinois

Federal Retaliation Protections

Federal law prohibits employers from retaliating against employees who engage in protected activities. Retaliation is the most frequently cited basis for charges filed with the Equal Employment Opportunity Commission (EEOC).

Federal anti-retaliation protections applicable in Illinois include:

  • Title VII of the Civil Rights Act (discrimination complaints)
  • Americans with Disabilities Act (disability accommodation requests and related complaints)
  • Age Discrimination in Employment Act (age discrimination complaints)
  • Fair Labor Standards Act (wage and hour complaints)
  • Occupational Safety and Health Act (safety complaints)
  • Family and Medical Leave Act (leave requests and related complaints)
  • Sarbanes-Oxley Act (corporate fraud reporting — publicly traded companies)

Source: https://www.eeoc.gov/retaliation · https://www.osha.gov/whistleblower

Illinois Whistleblower and Anti-Retaliation Laws

Illinois provides multiple state-level whistleblower and anti-retaliation statutes for private-sector employees.

Illinois Whistleblower Act (740 ILCS 174/) — The Illinois Whistleblower Act prohibits employers from taking retaliatory action against employees who disclose, or threaten to disclose, to a supervisor or public body any activity, policy, or practice that the employee reasonably believes violates a law, rule, or regulation. The Act covers both actual disclosures and threatened disclosures. Prohibited retaliatory actions include termination, demotion, suspension, and changes in terms or conditions of employment.

IL OSHA Anti-Retaliation (820 ILCS 219/110) — The Illinois Occupational Safety and Health Act prohibits covered entities from retaliating against employees for engaging in activities protected under IL OSHA, including reporting workplace safety hazards. The Illinois Department of Labor administers and investigates IL OSHA whistleblower complaints.

Illinois Human Rights Act (775 ILCS 5/) — The IHRA prohibits retaliation against employees who oppose violations of the Act, participate in IDHR proceedings, or assert their rights under the Act. Retaliation claims are filed with the Illinois Department of Human Rights within 2 years.

Victims’ Economic Security and Safety Act (VESSA) (820 ILCS 180/) — VESSA prohibits retaliation against employees who request leave or accommodations related to domestic violence, sexual violence, gender violence, or stalking. The Illinois Department of Labor administers VESSA.

Protected activities under the Illinois Whistleblower Act include:

  • Disclosing or threatening to disclose a violation of law, rule, or regulation to a public body
  • Reporting violations of public health, safety, or environmental law
  • Refusing to participate in an activity that would result in a violation of law
  • Filing a workers’ compensation claim (independently protected under the public policy exception to at-will employment)

Remedies — An employee who prevails on an Illinois Whistleblower Act claim may be entitled to reinstatement, back pay, and attorney’s fees.

Sources: https://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2495&ChapterID=57 · https://labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/safety/documents/NEW%20IL%20WIM%202-16-23%20V1%20FINAL.pdf · https://dhr.illinois.gov/ · https://labor.illinois.gov/laws-rules.html

Constructive Discharge in Illinois

Illinois courts recognize the doctrine of constructive discharge. Constructive discharge occurs when an employer makes working conditions so intolerable that a reasonable employee would feel compelled to resign. Under Illinois law, constructive discharge is treated as an involuntary termination for purposes of wrongful termination claims.

The Illinois standard for constructive discharge applies an objective test: the conditions must be so intolerable that a reasonable person in the employee’s position would have felt compelled to resign. Courts examine the totality of circumstances, including the severity and pervasiveness of the conditions, whether the employer had notice of the conditions, and whether the employer took remedial action.

Constructive discharge claims in Illinois most commonly arise in conjunction with discrimination, harassment, or retaliation claims under the Illinois Human Rights Act (775 ILCS 5/) or federal law. Where constructive discharge is established, the employee is treated as having been involuntarily terminated, which affects the available remedies including reinstatement and back pay. Filing deadlines applicable to the underlying claim govern constructive discharge claims filed with the IDHR or EEOC.

Source: https://dhr.illinois.gov/ · https://www.eeoc.gov/discrimination-type

Notice Requirements in Illinois

Is an Employer Required to Give Notice Before Termination in Illinois?

Illinois does not require employers to provide advance notice before terminating an individual employee, outside of the Illinois WARN Act obligations applicable to mass layoffs and plant closings. The IDOL has confirmed that an employer may terminate an employee without advance notice or cause under the at-will doctrine. 820 ILCS 115/.

Source: https://labor.illinois.gov/faqs.html

Is an Employee Required to Give Two Weeks’ Notice in Illinois?

No. The Illinois Department of Labor has confirmed that notice is not required by either party under the at-will employment doctrine. Two weeks’ notice is a professional convention, not a legal requirement under Illinois or federal law. Where an individual employment contract specifies a required notice period, the contract terms apply.

Source: https://labor.illinois.gov/faqs.html

Service Letter Law

Illinois does not have a general service letter law requiring employers to provide a written statement of employment dates and reason for termination upon request.

However, the Illinois Personnel Record Review Act (820 ILCS 40/) provides a related protection: employees have the right to inspect and copy their personnel records. Employers are required to allow employees or former employees to inspect their personnel records within 7 business days of a written request, and up to twice per calendar year for current employees. Former employees may make one inspection per year for up to one year following separation.

Source: https://labor.illinois.gov/faqs/personnel-records-review-faq.html · https://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2395

How to File a Termination Complaint in Illinois

State Filing Options
Agency Handles Website Filing Deadline
Illinois Department of Labor (IDOL) Wage claims, final paycheck violations, WARN Act violations, IL OSHA retaliation https://labor.illinois.gov 1 year from date wages were due (wage claims); 30 days (IL OSHA retaliation)
Illinois Department of Human Rights (IDHR) Discrimination, harassment, retaliation under the Illinois Human Rights Act https://dhr.illinois.gov 2 years from the date of the alleged violation
Illinois Human Rights Commission (IHRC) Adjudicates cases investigated by IDHR https://hrc.illinois.gov N/A — cases forwarded by IDHR
Wage claims are filed online at: https://webapps.illinois.gov/dol/wageclaims/

The IDHR accepts discrimination charge filings by phone, mail, or in person at the Department’s Chicago or Springfield offices.

Sources: https://labor.illinois.gov/file-a-workplace-complaint.html · https://dhr.illinois.gov/filing-a-charge/employment.html · https://hrc.illinois.gov/rights.html

Federal Filing Options
Agency Handles Filing Deadline
EEOC Discrimination under Title VII, ADA, ADEA, GINA, Pregnancy Discrimination Act 300 days (Illinois is a deferral state)
OSHA Safety and health retaliation 30 days
DOL Wage and Hour Division FLSA violations (minimum wage, overtime) 2 years (3 years for willful violations)

Illinois is a deferral state, which extends the federal filing deadline with the EEOC to 300 days (rather than the standard 180-day deadline in non-deferral states). The IDHR is the designated Fair Employment Practices Agency (FEPA) with which the EEOC has a worksharing agreement.

EEOC Field Office for Illinois:

EEOC Chicago District Office — 230 South Dearborn Street, Suite 2920, Chicago, IL 60604 Website: https://www.eeoc.gov/field-office/chicago The Chicago District Office is responsible for processing charges of discrimination against private, state, and local government employers throughout most of Illinois.

Sources: https://www.eeoc.gov/filing-charge-discrimination · https://www.eeoc.gov/field-office/chicago · https://www.dol.gov/agencies/whd/faq/workers · https://www.osha.gov/whistleblower

FAQ: Illinois Termination Laws

Is Illinois an at-will employment state?

Yes. Illinois is an at-will employment state. The Illinois Department of Labor has confirmed that an employer or employee may terminate the employment relationship at any time, without any reason or cause, unless an exception applies. The employer cannot discriminate based on protected classes or violate clearly established public policy.

Can an employer fire an employee for no reason in Illinois?

Yes, under the at-will employment doctrine. An employer may terminate an employee for no reason, a bad reason, or any lawful reason. However, termination for an unlawful reason — including discrimination based on protected classes under the Illinois Human Rights Act (775 ILCS 5/) or federal law, or in violation of a clearly mandated public policy — constitutes wrongful termination.

What constitutes wrongful termination in Illinois?

Wrongful termination in Illinois occurs when an employer fires an employee in violation of: (1) the Illinois Human Rights Act or federal anti-discrimination law; (2) clearly mandated public policy (e.g., termination for filing a workers’ compensation claim or refusing to commit an illegal act); (3) an express or implied employment contract; or (4) the Illinois Whistleblower Act (740 ILCS 174/).

When is the final paycheck due after termination in Illinois?

Under the Illinois Wage Payment and Collection Act (820 ILCS 115/5), the final paycheck is due at the time of separation if possible, but in no event later than the next regularly scheduled payday. This deadline applies to both involuntary terminations and voluntary resignations.

Does Illinois require employers to pay out unused vacation or PTO at termination?

Yes, where the employer maintains a vacation bank or general PTO bank. Under 820 ILCS 115/2 and IDOL guidance, the monetary equivalent of all earned, accrued vacation must be paid at termination. Illinois prohibits “use-it-or-lose-it” provisions that would cause earned vacation to be forfeited at separation. Sick pay is not required to be paid out unless the employer’s policy provides for it.

Does the WARN Act apply in Illinois?

Yes. Both the federal WARN Act (29 U.S.C. § 2101 et seq.) and the Illinois Worker Adjustment and Retraining Notification Act (820 ILCS 65/) apply in Illinois. The Illinois WARN Act covers employers with 75 or more full-time employees and requires 60 days’ advance notice of plant closings or qualifying mass layoffs.

Does Illinois have a state WARN Act?

Yes. The Illinois Worker Adjustment and Retraining Notification Act (820 ILCS 65/), signed into law in 2004, covers employers with 75 or more full-time employees — a lower threshold than the federal WARN Act’s 100-employee requirement. The Illinois WARN Act imposes a civil penalty of up to $500 per day of violation and requires back pay and benefits for each day of the violation, up to 60 days.

Is severance pay required by law in Illinois?

No. Illinois law does not require employers to provide severance pay upon termination. Severance is governed by the employer’s individual employment contract, established policy, or collective bargaining agreement. Unless the employer has expressly promised severance, none is due under state or federal law.

What is the statute of limitations for wrongful termination in Illinois?

The deadline varies by claim type. Discrimination claims under the Illinois Human Rights Act must be filed with the IDHR within 2 years of the alleged violation. Charges filed with the EEOC under federal law must be filed within 300 days (Illinois is a deferral state). Wage claims must be filed with IDOL within 1 year from the date wages were due (820 ILCS 115/11). Public policy tort claims (retaliatory discharge) are generally subject to a 5-year limitations period in circuit court.

Can an employer fire an employee for filing a complaint in Illinois?

No. Retaliation for filing a complaint related to wages, discrimination, safety conditions, or other protected activities is prohibited under multiple Illinois and federal statutes. The Illinois Whistleblower Act (740 ILCS 174/) prohibits retaliation for disclosing violations of law. The Illinois Human Rights Act (775 ILCS 5/) prohibits retaliation for opposing discrimination or participating in IDHR proceedings.

What are the penalties for a late final paycheck in Illinois?

An employer who fails to timely pay final wages may be liable for: a 2% monthly penalty on the unpaid amount; a 1% daily penalty if payment is not made within 15 days of an IDOL order; and administrative fees of $500 to $1,250 depending on the claim amount. Statutory damages of 5% of the unpaid amount per month may also apply in administrative hearings.

What is constructive discharge under Illinois law?

Constructive discharge occurs when an employer makes working conditions so intolerable that a reasonable person in the employee’s position would feel compelled to resign. Illinois courts apply an objective standard and treat constructive discharge as involuntary termination for purposes of wrongful termination claims, including claims under the Illinois Human Rights Act.

Does Illinois have a service letter law?

No. Illinois does not have a general service letter law requiring employers to issue written statements of employment dates or reasons for termination upon request. However, under the Illinois Personnel Record Review Act (820 ILCS 40/), employees and former employees have the right to inspect and copy their personnel records upon written request.

What additional protected classes does Illinois recognize beyond federal law?

The Illinois Human Rights Act (775 ILCS 5/) extends anti-discrimination protections beyond federal law to include: sexual orientation (including gender-related identity), marital status, order of protection status, arrest record, conviction record, citizenship and immigration status, military status or unfavorable discharge from military service, and family responsibilities (effective January 1, 2023). These protections apply in addition to all federally protected classes.

Can an employer withhold the final paycheck for unreturned property in Illinois?

No. The Illinois Department of Labor has confirmed that an employer cannot withhold earned wages, vacation, or any final compensation because an employee failed to return employer-owned equipment, uniforms, phones, or other property. Deductions for unreturned property from the final paycheck are prohibited under IDOL Deductions from Pay guidance.

What is the Illinois whistleblower protection statute?

The Illinois Whistleblower Act (740 ILCS 174/) prohibits employers from retaliating against employees who disclose or threaten to disclose a violation of law, rule, or regulation to a supervisor or public body. The Act covers private-sector employees. Additional whistleblower protections for employees who report safety violations are provided under the IL OSHA anti-retaliation provision (820 ILCS 219/110), administered by the Illinois Department of Labor.

How much notice is required before a mass layoff in Illinois?

The Illinois Worker Adjustment and Retraining Notification Act (820 ILCS 65/) requires 60 calendar days’ advance written notice of a plant closing or qualifying mass layoff. The Act applies to employers with 75 or more full-time employees. A mass layoff triggering notice involves employment losses affecting at least 33% of the workforce and at least 25 employees, or at least 250 employees, during any 30-day period at a single site.

Can an employee be fired during FMLA leave in Illinois?

The federal Family and Medical Leave Act (FMLA) prohibits employers with 50 or more employees from retaliating against or terminating employees for exercising FMLA rights. An employee on FMLA leave is generally entitled to be restored to the same or equivalent position upon return. Termination during FMLA leave for reasons unrelated to the leave (e.g., a workforce reduction that would have occurred regardless of the leave) may be lawful; termination based on the FMLA leave itself is not.

Source: https://www.dol.gov/agencies/whd/fmla

Is two weeks’ notice required by law in Illinois?

No. Neither Illinois law nor federal law requires an employee to provide two weeks’ notice before resigning. The Illinois Department of Labor has confirmed that notice is not required by either party under the at-will employment doctrine. Where an employment contract specifies a required notice period, the contract terms govern.

Source: https://labor.illinois.gov/faqs.html

Sources and Verification Log

# Claim Source URL Verified Date
1At-will employment status in IllinoisIllinois Department of Laborhttps://labor.illinois.gov/faqs.htmlMarch 2026
2Final paycheck deadline (all separations) — 820 ILCS 115/5Illinois Department of Labor — Wage Payment FAQhttps://labor.illinois.gov/faqs/wage-payment-faq.htmlMarch 2026
3Final compensation includes vacation equivalent — 820 ILCS 115/2Illinois Department of Labor — Wage Payment FAQhttps://labor.illinois.gov/faqs/wage-payment-faq.htmlMarch 2026
4Vacation payout at termination requirementIllinois Department of Labor — Vacation FAQhttps://labor.illinois.gov/faqs/vacation-faq.htmlMarch 2026
5PLAWA leave payout rule (not required unless in PTO/vacation bank)Illinois Department of Labor — PLAWA FAQhttps://labor.illinois.gov/faqs/paidleavefaq.htmlMarch 2026
6Final pay wage claim — 1-year filing deadline — 820 ILCS 115/11Illinois Department of Labor — Wage Payment FAQhttps://labor.illinois.gov/faqs/wage-payment-faq.htmlMarch 2026
72% monthly and 1% daily late pay penaltiesIllinois Department of Labor — Employer FAQhttps://labor.illinois.gov/faqs/employer-faq.htmlMarch 2026
8IDOL wage claim filing portalIllinois Department of Laborhttps://webapps.illinois.gov/dol/wageclaims/March 2026
9Prohibited deductions — unreturned propertyIllinois Department of Labor — Deductions FAQhttps://labor.illinois.gov/faqs/deductions-from-pay-faq.htmlMarch 2026
10Severance pay not required — 820 ILCS 115/2Illinois Department of Labor — Wage Payment FAQhttps://labor.illinois.gov/faqs/wage-payment-faq.htmlMarch 2026
11Illinois WARN Act coverage — 75 employees, 60 days, 820 ILCS 65/Illinois Department of Labor — WARNhttps://labor.illinois.gov/laws-rules/conmed/warn.htmlMarch 2026
12Illinois WARN Act — civil penalty up to $500/dayIllinois Department of Labor — WARNhttps://labor.illinois.gov/laws-rules/conmed/warn.htmlMarch 2026
13Illinois WARN mass layoff thresholds — 820 ILCS 65/5; 56 Ill. Adm. Code 230Illinois General Assemblyhttps://www.ilga.gov/Commission/jcar/admincode/JCARTitlePart.asp?Title=056&Part=0230March 2026
14Illinois WARN Act — DCEO notice requirement and reportIllinois DCEOhttps://dceo.illinois.gov/workforcedevelopment/warn.htmlMarch 2026
15Illinois WARN Act enacted August 15, 2004Illinois DCEOhttps://dceo.illinois.gov/workforcedevelopment/warn.htmlMarch 2026
16Federal WARN Act thresholdsU.S. Department of Laborhttps://www.dol.gov/agencies/eta/layoffs/warnMarch 2026
17IHRA protected classes — employmentIllinois Department of Human Rights — Filing a Charge FAQhttps://dhr.illinois.gov/filing-a-charge/faq-home/faq-section-ii.htmlMarch 2026
18IHRA protected classes — sexual orientation, gender identity, marital status, arrest record, etc.Illinois Department of Human Rightshttps://dhr.illinois.gov/filing-a-charge/employment.htmlMarch 2026
19IHRA employer size — 15 employees generally; 1 employee for sexual harassment, disability, pregnancyIllinois General Assembly — Governor veto messagehttps://www.ilga.gov/documents/legislation/100/HB/10000HB4572gms.htmMarch 2026
20IDHR — 2-year filing deadline for discrimination chargesIllinois Department of Human Rightshttps://dhr.illinois.gov/March 2026
21EEOC — 300-day filing deadline (Illinois is a deferral state)EEOC — Filing a Chargehttps://www.eeoc.gov/filing-charge-discriminationMarch 2026
22EEOC Chicago District OfficeEEOChttps://www.eeoc.gov/field-office/chicagoMarch 2026
23Illinois Whistleblower Act — 740 ILCS 174/Illinois General Assemblyhttps://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2495&ChapterID=57March 2026
24IL OSHA whistleblower provision — 820 ILCS 219/110Illinois Department of Labor — IL OSHA Whistleblower Manualhttps://labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/safety/documents/NEW%20IL%20WIM%202-16-23%20V1%20FINAL.pdfMarch 2026
25IHRA anti-retaliationIllinois Department of Human Rightshttps://dhr.illinois.gov/March 2026
26Two weeks' notice not requiredIllinois Department of Laborhttps://labor.illinois.gov/faqs.htmlMarch 2026
27Personnel Record Review Act — 820 ILCS 40/Illinois General Assemblyhttps://www.ilga.gov/legislation/ilcs/ilcs3.asp?ActID=2395March 2026
28Implied contract exception — Duldulao v. Saint Mary of Nazareth Hospital CenterIllinois Courts — Supreme Courthttps://www.illinoiscourts.gov/supreme-court/opinions/March 2026
29Good faith and fair dealing — Powers v. Delnor HospitalIllinois Courts — Appellate Courthttps://www.illinoiscourts.gov/appellate-court/opinions/March 2026
30FMLA — threshold and retaliationU.S. Department of Laborhttps://www.dol.gov/agencies/whd/fmlaMarch 2026
31Federal EEOC retaliation protectionsEEOChttps://www.eeoc.gov/retaliationMarch 2026
32OSHA whistleblower protectionsOSHAhttps://www.osha.gov/whistleblowerMarch 2026
33DOL — final pay guidanceU.S. Department of Laborhttps://www.dol.gov/agencies/whd/faq/workersMarch 2026

Update History

March 2026: Initial publication. All URLs verified functional.

Related Pages

This page compiles information from official government sources for general reference purposes. It does not constitute legal advice. Employment law is subject to legislative changes and judicial interpretation. For specific compliance questions, consultation with a licensed attorney. Last updated: March 2026.